CVE-2021-43669: Linuxfoundation Fabric

High severity, CVSS 7.5. EPSS: 1.1% chance of exploitation in the next 30 days.

A vulnerability has been detected in HyperLedger Fabric v1.4.0, v2.0.0, v2.0.1, v2.3.0. It can easily break down as many orderers as the attacker wants. This bug can be leveraged by constructing a message whose header is invalid to the interface Order. This bug has been admitted and fixed by the developers of Fabric.

Affected products

• Linuxfoundation Fabric: version 1.4.0 only; version 2.0.0 only; version 2.0.1 only; version 2.3.0 only

Published 2021-11-18. Last modified 2026-06-17.